Home / 158,382.78-218,568.50-86,761.24

Finding the Fourth Proportional to 158,382.78, 218,568.50 and 86,761.24

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Solution

The fourth proportional to 158,382.78, 218,568.50 and 86,761.24 is: 119,730.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,382.78 : 218,568.50 = 86,761.24 : x
  2. Step 2: Convert to fraction form
    158,382.78/218,568.50 = 86,761.24/x
  3. Step 3: Cross multiply
    158,382.78x = 218,568.50 × 86,761.24
  4. Step 4: Simplify right side
    158,382.78x = 18,963,274,084.94
  5. Step 5: Solve for x
    x = 18,963,274,084.94/158,382.78
  6. Step 6: Final answer
    x = 119,730.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.